At what maximum temperature are cryogenic liquids generally stored?

Cryogenic liquids are typically stored at very low temperatures, primarily to maintain their state as liquids. The correct answer of minus 130°F reflects a common threshold for many cryogenic substances. Materials such as liquid nitrogen, for example, are stored at temperatures around minus 320°F, while liquid argon is around minus 300°F.

Although minus 130°F is technically warmer than the temperatures at which some cryogenic liquids are stored, it is a plausible maximum for certain materials that may still be classified as cryogenic. This temperature ensures that the gases remain in liquid form, which is critical for their applications, such as in medical uses, aerospace, or industrial processes.

The other choices do not accurately represent the range for typical cryogenic liquid storage temperatures. 0°F and 32°F (the freezing point of water) are considerably higher than the temperatures used in cryogenics, and minus 200°F, while closer to the correct range, is still below the maxima for many cryogenic liquids. Therefore, the choice of minus 130°F offers a valid maximum storage temperature relevant to certain cryogenic situations.